By the way, I always wondered why we got modern versions of the Mini and the Beetle, but not the 2CV.
If its "outrageously small but can still take you and a goose to market", Citroën have a tiny little electric vehicle, the Ami, today.
If its "something simple enough that a farmer can weld the panels themselves", I fear those days are long gone, in the same way that the OG Land Rover Defender is no longer a car you can wrench on. The spiritual heir of such cars is probably a toyota hilux(?). Modern safety standards and the presence of complex electronics beneath every surface, to say nothing of the more complex sheet metal shapes, probably stop that idea in its tracks.
> The Grenadier was designed to be a modern replacement of the original Land Rover Defender, with boxy bodywork, a steel ladder chassis, beam axles with long-travel progressive-rate coil spring suspension (front and rear), and powered by a BMW B58 inline six turbocharged engine.
Roads are mostly in better shape today, but in remote places of California there are still secondary roads where long-travel suspension is of benefit (partly explaining the popularity of pick-up trucks there).
Its like trying to fix a single broken strand in a spider web, even with the tiniest thread you can find and the most delicate hands and tools, any manipulation of the web at all is likely to cause even more defects and any successful patch job will need to be way over-kill compared to what was originally broken. You can't just fix that one thread that broke, you gotta throw a large patch over the entire area and hope that the original spider thread designs that were undamaged will be able to hold up against your much stronger patch job.
I may be wrong but I don't think the 2cv has a design that can translate as easily to a newer version the same way as the beetle design could without being completely denatured. I think it would be easier to build a modern HY looking van.